5、称单数不加s),也没有非谓语形式(不定式、分词)。注意:need用作情态动词时常用于否定句和疑问句中。例:Need he bring his laptop tomorrow? 明天他必须带他的笔记本过来吗?Come on, you needn't worry about it because it's not your fault. 行啦,你不必担心的因为那不是你的错。She needn't have arrived so early, need she? 她本不必到得这么早,不是吗?注意:must
6、引导的一般疑问句的否定回答必须使用needn't。例:--Must I leave? 我必须离开吗?--No, you needn't. 不,你不必离开。二、need作实意动词的用法:1、need + something 需要某物例:I need some fruits to eat. 我需要些水果来吃。2、need to do something 需要做某事例:You don't need to have the bike repaired right away. 你不必马上去修车。3、need
7、doing = need to be done 需要……例:The room needs cleaning = The room needs to be cleaned. 房间需要打扫了。4、need somebody to do something 需要某人做某事例:I need someone to help me out of this problem. 我需要找人来帮助我解决这个问题。